Basement and mansard extension at 15 Adam And Eve Mews, Kensington, London W8

What was proposed

The application proposed a basement, enlarged double mansard roof with dormers, a roof light, front changes and refurbishment.

“/PP/25/04767:1 THE ROYAL BOROUGH OF KENSINGTON AND CHELSEA PLANNING APPLICATIONS COMMITTEE 04/11/2025 REPORT BY THE DIRECTOR, PLANNING AND PLACE Application: PP/25/04767 Agenda Item: N131 Address:15 Adam And Eve Mews, LONDON, W8 6UG Proposal: Construction of new basement level below existing ground floor level, new double mansard roof with new dormer windows to front & rear, new roof light, new doors & windows to front elevation, new brick work to front facade and general…”

“/PP/25/04767:2 2.Reason for committee consideration ·Three or more objections were received during the consultation period and the recommendation is to grant. 3.The site and its surroundings 3.1 The property is a two-storey (plus later date roof level accommodation) 19 th C mews building that has been heavily altered and in need of repair. The property is within the Edwardes Square/Scarsdale & Abingdon Conservation Area.”

Officer report

Earlier planning history

Permission was granted in 1964 for alterations to the first and second floors, including a flat and studio or office.

“Officers visited the site on 30 th October 2025. 4.4The relevant planning history is set out below: ReferenceDescriptionDecision - Alterations to first and second floors for use as flat and 1 room as studio/office.”

Officer report

What officers recommended

Officers recommended approval because the proposal would preserve or enhance the conservation area and safeguard nearby living conditions and structural stability.

“The submission has considered the structural stability of the application property and relevant neighbouring buildings to comply with the requirements of the Council's Basement policy and guidance. 1.2Subject to conditions, the proposed development would also safeguard the living conditions of the occupiers of neighbouring properties.”

“/PP/25/04767:3 5.2 These policies can be read online at: ·Local Plan 2024: https://www.rbkc.gov.uk/planning-and-building-control/planning-policy/local-plan/local- plan Other local strategies or publications 5.5The main relevant supplementary planning documents adopted by the Council are: ·Edwardes Square, Scarsdale & Abingdon Conservation Area Appraisal ·Trees and Development ·Basements ·Noise ·Transport and Streets 5.6 These documents can be read online at: ·Conservation…”

Officer report

What consultees and residents said

Twenty objection letters raised concerns about structural stability, character, drainage, construction, traffic, consultation, light and overlooking.

“The proposals contain an acceptable CMS that was since subject to re-consultation with local residents and that demonstrates the structural stability of neighbouring buildings would be safeguarded in line with LP 2024 policy CD11. Recommended condition(s) would ensure the development would be supervised by a qualified structural engineer. 2 Adverse impact upon character and appearance.”

“/PP/25/04767:7 5 Undue parking and traffic arising from this development. CTMP inadequate. A refuse cupboard should be provided. The existing dwelling would benefit from ample space internally where waste/recycling material can adequately be stored until bin collection days. A CTMP has been submitted and reviewed and this has been addressed within para 6.14 above. 6 Have the Iverna gardens residents being notified of this development? Yes.”

Officer report

Who spoke

An objector addressed the committee against the application, and the applicant addressed it in support.

The committee vote

The committee approved the application by majority, with Councillor Verboven dissenting.

“Resolved by majority (with Cllr Verboven dissenting): to approve planning permission with the conditions in section 9 of the officer report (Construction Traffic Management Plan condition to be amended to include reference to the nursery).”

Minutes